Protecting a worksheet in Excel 2003 prevents others users from editing it. For example, if you have tracked and charted your business's sales on a sheet, you will want co-workers to access the ...

To remove protection from the spreadsheet, open it in Excel, click the "Review" tab and then click "Unprotect Sheet" in the Changes group. Type the password into the Password field and click "OK." ...

The plug-in adds Unprotect workbook and Unprotect sheet options to Excel's Tools menu, and using it is as simple as selecting an option when you're locked out.